Ferrozine Assay for Simple and Cheap Iron Analysis of Silica-Coated Iron Oxide Nanoparticles

2018 ◽  
Author(s):  
Hattie Ring ◽  
Zhe Gao ◽  
Nathan D. Klein ◽  
Michael Garwood ◽  
John C. Bischof ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Hydrofluoric Acid ◽  
Inductively Coupled Plasma ◽  
Silica Shell ◽  
Oxide Nanoparticles ◽  
Inductively Coupled ◽  
Digestion Process ◽  
Plasma Methods ◽  
Iron Analysis

The Ferrozinen assay is applied as an accurate and rapid method to quantify the iron content of iron oxide nanoparticles (IONPs) and can be used in biological matrices. The addition of ascorbic aqcid accelerates the digestion process and can penetrate an IONP core within a mesoporous and solid silica shell. This new digestion protocol avoids the need for hydrofluoric acid to digest the surrounding silica shell and provides and accessible alternative to inductively coupled plasma methods. With the updated digestion protocol, the quantitative range of the Ferrozine assay is 1 - 14 ppm. <br>

Ferrozine Assay for Simple and Cheap Iron Analysis of Silica-Coated Iron Oxide Nanoparticles

2018 ◽  
Author(s):  
Hattie Ring ◽  
Zhe Gao ◽  
Nathan D. Klein ◽  
Michael Garwood ◽  
John C. Bischof ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Hydrofluoric Acid ◽  
Inductively Coupled Plasma ◽  
Silica Shell ◽  
Oxide Nanoparticles ◽  
Inductively Coupled ◽  
Digestion Process ◽  
Plasma Methods ◽  
Iron Analysis

The Ferrozinen assay is applied as an accurate and rapid method to quantify the iron content of iron oxide nanoparticles (IONPs) and can be used in biological matrices. The addition of ascorbic aqcid accelerates the digestion process and can penetrate an IONP core within a mesoporous and solid silica shell. This new digestion protocol avoids the need for hydrofluoric acid to digest the surrounding silica shell and provides and accessible alternative to inductively coupled plasma methods. With the updated digestion protocol, the quantitative range of the Ferrozine assay is 1 - 14 ppm. <br>

scholarly journals Synthesis of Organic Dye-Impregnated Silica Shell-Coated Iron Oxide Nanoparticles by a New Method

2008 ◽  
Vol 3 (12) ◽  
pp. 496-501 ◽  
Author(s):  
Cuiling Ren ◽  
Jinhua Li ◽  
Qian Liu ◽  
Juan Ren ◽  
Xingguo Chen ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Silica Shell ◽  
Organic Dye ◽  
New Method ◽  
Oxide Nanoparticles

scholarly journals In vivo fate of free and encapsulated iron oxide nanoparticles after injection of labelled stem cells

2018 ◽  
Author(s):  
Sumaira Ashraf ◽  
Arthur Taylor ◽  
Jack Sharkey ◽  
Michael Barrow ◽  
Patricia Murray ◽  
...  
Keyword(s):  
Stem Cells ◽  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Inductively Coupled Plasma ◽  
Superparamagnetic Iron Oxide ◽  
Emission Spectrometry ◽  
Magnetic Characteristics ◽  
Oxide Nanoparticles ◽  
Imaging Results

AbstractNanoparticle contrast agents are useful tools to label stem cells and monitor the in vivo bio-distribution of labeled cells in pre-clinical models of disease. In this context, understanding the in vivo fate of the particles after injection of labelled cells is important for their eventual clinical use as well as for the interpretation of imaging results. We examined how the formulation of superparamagnetic iron oxide nanoparticles (SPIONs) impacts the labelling efficiency, magnetic characteristics and fate of the particles by comparing individual SPIONs with polyelectrolyte multilayer capsules containing SPIONs. At low labelling concentration, encapsulated SPIONs served as an efficient labelling agent for stem cells. The bio-distribution after intra-cardiac injection of labelled cells was monitored longitudinally by MRI and as an endpoint by inductively coupled plasma-optical emission spectrometry. The results suggest that, after being released from labelled cells after cell death, both formulations of particles are initially stored in liver and spleen and are not completely cleared from these organs 2 weeks post-injection.

scholarly journals Comparison of Iron Oxide Nanoparticles in Photothermia and Magnetic Hyperthermia: Effects of Clustering and Silica Encapsulation on Nanoparticles’ Heating Yield

2020 ◽  
Vol 10 (20) ◽  
pp. 7322 ◽  
Author(s):  
Sebastjan Nemec ◽  
Slavko Kralj ◽  
Claire Wilhelm ◽  
Ali Abou-Hassan ◽  
Marie-Pierre Rols ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Heat Generation ◽  
Photothermal Therapy ◽  
Superparamagnetic Iron Oxide ◽  
Magnetic Hyperthermia ◽  
Silica Shell ◽  
Superparamagnetic Iron Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Silica Encapsulation

Photothermal therapy is gathering momentum. In order to assess the effects of the encapsulation of individual or clustered superparamagnetic iron oxide nanoparticles (SPIONs) on nanoparticle light-to-heat conversion, we designed and tested individual and clustered SPIONs encapsulated within a silica shell. Our study compared both photothermia and magnetic hyperthermia, and it involved individual SPIONs as well as silica-encapsulated individual and clustered SPIONs. While, as expected, SPION clustering reduced heat generation in magnetic hyperthermia, the silica shell improved SPION heating in photothermia.

scholarly journals Surfactant free superparamagnetic iron oxide nanoparticles for stable ferrofluids in physiological solutions

2015 ◽  
Vol 51 (14) ◽  
pp. 2863-2866 ◽  
Author(s):  
K. Mandel ◽  
M. Straßer ◽  
T. Granath ◽  
S. Dembski ◽  
G. Sextl
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Superparamagnetic Iron Oxide ◽  
Silica Shell ◽  
Superparamagnetic Iron Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Wide Ph Range ◽  
Ph Range

Ferrofluids of superparamagnetic Fe3O4 nanoparticles with “patchy” silica shell are stable over a wide pH range and in physiological solutions.

scholarly journals Effective Removal of Arsenic in Water by Inductively Coupled Plasma Mass Spectrometry: Equilibrium and Kinetic Study

2021 ◽  
Author(s):  
Sara Hassan Hassan ◽  
Shane Zehra Syed ◽  
Zubair Ahmed ◽  
Mohammad Younis Talpur ◽  
Muammar Ali Chang
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Inductively Coupled Plasma ◽  
Arsenic Concentration ◽  
Nano Particles ◽  
Oxide Nanoparticles ◽  
Porous Iron ◽  
Icp Ms ◽  
Nano Catalyst ◽  
Removal Of Arsenic

Abstract In this study, we report the efficient catalytic activity for the removal of arsenic contamination from water using L-cysteine derived iron oxide nanoparticles. The catalytic ability was checked by ICP-MS. Best optimized magnetite iron oxide nano particles at pH-10 were confirmed through different characterization techniques such as TEM, XRD, EDS, FTIR and zeta potential analyzer, respectively. TEM was confirmed the smallest particle size in the range of 5-30 nm. The application study was performed by ICP-MS instrument to check the removal efficiency of arsenic by iron oxide magnetite nano catalyst first on synthetic water prepared on laboratory was 99.8% and then checked on real water samples collected was 81.09% from arsenic contaminated sites areas of Larkana exceeded arsenic concentration from 10ug/l as compared to WHO limit, The adsorption capacity of arsenic on the prepared porous iron oxide nanoparticles was 1.96 mg/g proved that the particles having higher surface area with excellent catalytic degradation property. The adsorption dataset best fits in the Langmuir model and obeyed the pseudo-second-order model. Herein, we report the simple and greener synthesized iron oxide nano-adsorbent and their effective ability for the removal of arsenic from water source using advanced ICP-MS technique.

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